Visible index binder



.Feb. 24, 1931. J. 1.. M MILLAN VISIBLE INDEX BINDER Original Filed June 4, 1928 2 Sheets-Sheet 1 5') ATTUE'NEFE' Feb. 24, 1931. J. L. MCMILLAN 1,794,338

VISIBLE INDEX BINDER Original Filed June 4, 1928 2 Sheets-Sheet 2 NYE V701? 8 Y m I A TTDFPNEYS W/ r/ves 5' Patented Feb. 24, 1931 UNITED STATES PATENT orifice JOHN L. MCMILLAN, OF SYRACUSE, NEW YORK, ASSIGNOR TO MOMILLAN BOOK CON- PANY, OF SYRACUSE, NEW YORK, A CORPORATION OF NEW YORK VISIBLE INDEX BINDER Application filed June 4, 1928, Serial No. 282,736. Renewed July 30, 1930.

This invention relates to a new and improved loose leaf binder of the type usually called a visible index binder.

hen a loose leaf binder is used as a visible index the sheets in the binder are narrower than the binder itself so that they may be placed in the binder in overlapping rela- 5 sheet from the binder and to add a new sheet to take the place of the one removed. When this is done it is usual to move upward in the book the sheets which were in position be neath the sheet removed so that the new replacing sheet may be placed at the bottom of the binder.

In order to facilitate the transfer of sheets from one position in a binder to another position in the binder various devices have been constructed by the use of which sheets may be transferred from one set of prongs to another set of prongs while they are retained at all times on prongs. In all the devices of the latter character known to the art the distance which a sheet may be moved in a binder is limited by the character of the means supplied for accomplishing the transfer so that if it is desired to move a sheet a greater distance than the device will permit it is necessary to repeat the transferring operation one or more times.

The main object of my invention is to provide in a visible index a transferring device which will permit the transfer of sheets from one position in the binder to any other position in the binder by one transferring operation irrespective of the distance which it is desired to move the sheet. Y e

Other objects and advantages relate to the size, shape and association of parts all as will more fully appear from the following description taken in connection with the vaccompanying drawings in which Figure 1 is a perspective View, partially broken away, ofv my binder in the closed posltion.

Figure 2 is a section on line 22 of Figure 1. V

Figure 3 is a section on line '33 of Fig perspective view of my lockmg slide.

My device may be used in conjunction with any type of loose leaf binder which has opposed sets of prongs which are movable to i and from each other but for the purpose of showing my device in combination with a' loose leaf binder I have here shown av type of binder in which a back member 1 is hingedly connected to an opposing back member '2. On the upper face of back member 1 I provide a top plate 3. A. vertically extending back plate 4: is secured to the outer longitudinal edge of back member-1 by screws, not shown, or other convenient means. The upper edge of back plate 4- is return bent to form a plurality of spaced eyes 5-5 to receive therebetween the eyes 6 of a cover -7 to form in combination with eyes 5 and 6 and pintle 8 a piano hinge. A prong carrying plate 9 is affixed to the back member 4- by rivets 10 or other convenlent means. A plurality, in this case shown as five, of arcuate rods or prongs l1 are secured to the inner longitudinal face of prong-carrying plate 9 adjacent the top thereof. Prong-carrying plate 9 has a plurality of spaced notches -13 on its upper edge for a purpose hereinafter to be described.

Back member 2 carries a to late 14- on its upper p p face and is provided with inner face of a vertically extending back plate 15 affixed to its outer longitudinal edge by screws, not shown, or other convenient means. Back plate 15 has its upper edge bent inwardly to form a longitudinally extending slot 16 for a purpose hereinafter to be described. A hinge member 17 is affixed to the outer face of the top longitudinal edgeof back plate .17. Hinge member -17 is provided with a plurality of spaced eyes" 18 ooacting with a plurality'of spaced eyes -19- on cover 20. Eyes -l8- and -19 and pintle 21 coact to form a piano hinge. A locking slide -22 vided with a plurality, in this case shown as four, of positioning lugs 26 for apurpose hereinafter to be described. A prongcarrying plate 27- has affixed to the upper longitudinal edge thereof a plurality, in this case shown as five, of spaced prongs -28 and is provided on its bottom longitudinal edge with a series, in this case shown as nineteen, of spaced notches 29 of a sizeto re ceive positioning lugs -26 and also of a size to permit the passage therethrough of ears -24l-. In order to assemble prongcarryingplate +27 on back member 2 I pull outwardly locking slide 22by means of handle 30 to the position shown in dotted lines on Figure I then place prong carrying plate -27 in position on back member 2 with its upper longitudinal edge in slot 16-with positioning lugs -26 in position in the proper slots to place prong carrying plate 2? with its ends in the same plane as the ends of proiig-carrying ate -9-. This positioni, mg of prougcarzjving plate -2T- is permitted due to the fact that ears -24 are so positioned that they will pass through slots 29 in prong-carrying plate ,27-. Vhen prong-carrying plate 27 is so positioned I push locking slide 22 inwardly which will position each ear 24 between two slots "29 and abutting against the in ner face of prong-carrying plate 27 so that prong-carrying plate -27- will be locked in position on back member -2.

For the purpose of releasably securing back members -land 2- in selected positions in relation to each other I provide in back member l a pair of spaced latches 3l and 32 which extend inwardly into apertures .-33, one only being shown in Figure 6. Latches -31- and -32-- are provided with a plurality, in this case shown as three, of notches 3 l-, two only being shown in Figure (3 on latch 3l-. A keeper 35- is slidably mounted in back member -2 and is provided with a pair of spaced slots and -3T so positioned that when keeper 35 is in the normal position it will engage notches 34- in latches -3land -32 to hold back members is opened to the intermediate position shown in Fig. 6, the keeper 3 5i being released so that it will engage latches 31- and 32- to lock the binder in that position. Locking slide 22 is then pulled outwardly to the position shown by dotted lines in Fig ure 5 to permit the removal-from the binder of prong-carrying plate 27. Prong-carrying plate 27, carrying with it sheet '39, is then moved vertically of the binder and again inserted therein and locked in position by locking slide 22 in the manner heretofore described. then transferred to the prongs -ll carried by the back member 1 Prong-carrying plate 27 is then releasedfromlocking sl.ide -22 and removed from the binder It isithen reinserted'in the binder in the normalfpositionand the binder is closed,

Ihave indicated in dotted lines on Figure 6 one position of prong-carrying plate -27- when it has been moved vertically inthe binder. It will be apparent that when the prong-carrying plate 27 is in the normal position, as shown in heavy lines on Figure 6, a prong '11-' on back member -2 would, when the bindcr was closed, enter a hole 4L0- in sheet -39. If, however, the prong-carrying plate -27 is moved vertically in the binder to the position shown by dotted-lines-in Figure 6, and the'binder is then closed the prong 11- will enter the hole 4;1 in sheet 39 with the result,

that when sheet 39 has been transferred to the prongs 11- carried by back member 1 and the prong-carrying plate, 27lrcturned to its normal position the sheet 89 will have been moved vertically the distance between two holes in the sheet 39.

The notches 13 in ring-carrying plate 12 are so positioned that when the binder is in the closed position as shown in Figure 1 the ends of the prongs 28 carried by prong-carrying plate 27 will enter the notches 13. Similarly notches 42 are provided in the upper edge of back plate 15 into which the ends of prongs 11 enter when the binder is in the closed position.

It will be obvious that prongcarrying plate 2'(' may be moved as long or as short a distance in the binder as may be desired and that the distance which a sheet 39 is transferred vertically in the binder may be varied at will. It will also be obvious that the sheet 3Qmay be moved in either direction with respect to back member 1.

It will also be obvious that the exact type and design of the binder with which my device is used may be varied as may be the method of operation of the binder with which my device is used for although I have shown and described a specific structure and form of part as an exemplificat-ion of an embodiment of my invention I do not desire to restrict myself to the exact size and shape or arrangement of parts as various changes may be made within the scope of the appended claims.

support, a plate having a plurality of prongs affixed thereto and having a plurality of spaced notches in one longitudinal edge, a slide mounted on the second-named prong 1 support, and a plurality of spaced tabs on one longitudinal edge of the slide adapted in one position of the slide to overlie the plate to secure it on the prong support and adapted in another position of the slide to register with the notches in the plate topermit the removal of the plate from the prong support.

:2. In a device of the class described, a prong support, a. plurality of prongs secured to such support, a second prong support in opposed relation to the first-named prong support, a plate having a plurality of prongs affiXed thereto and having a plurality of spaced notches in one longitudinal edge and the second named prong support being formed with a longitudinally extending slot adapted to receive the other longitudinal edge of the plate, a slide mounted on the second-named prong support, and a plurality of spaced tabs on one longitudinal edge of the slide adapted in one position of the slide to overlie the notched edge of the plate to secure it on the prong support and adapted in another position of the slide to register with the notches to permit the removal of the plate from the prong support.

3. In a device of the class described, a prong support, a plurality of prongs secured to such support, a second prong support in opposed relation to the first-named prong support, a plate having a plurality of prongs affixed thereto, and means for positively lock-V 

